1070_roof_replacmentEPDM.pdf

1. General Project Information:

Roof Replacement - Complete demolition of the existing EPDM low-slope ballast roof system and complete installation of a new white EPDM single-ply roof system on Maryland

Air National Guard A-10 Hanger (BLDG. 1070). There are three roof sections/elevations in this project. The lower section of the building is U-shaped. Section 2 is a small structure between section/elevation 1 and 3. The upper section is square shaped. The building is 44’ feet high two separate levels and has low-slope roof construction. The roof area is approximately 44,100.

2. Existing Conditions:

BLDG 1070 is a four story steel and masonry constructed hanger facility. The roofing systems employed on this facility consist of a fully adhered EPDM roofing system installed over tapered insulation on the lower section 1 and two inches of insulation on the upper section 2 The roof deck is a precast concrete slat roof deck on section 1 and 2 ¼” steel decking on section 2 and 3 supported by open web steel trusses. The precast concrete slat roof portion and 21/4” steel decking of this building is not included in this project. The roof is divided into three sections based upon elevation and or roof type. Section “1” is the lower two story portion of the main building, Section “2” is the small area between the lower and upper sections/elevations. Section 3 is the higher four story elevation over the main part of hanger and in the center of building.

3. Project Location and Background:

A-10 Hanger (Bldg.1070) is located at Martin State Airport, Maryland Air National Guard

Base, Baltimore, MD 21202. Entrance to the Air Guard side of the airport is at Lynbrook road off of Eastern Boulevard

4. Use of Premises:

Coordinate access to premises with Contracting Officer’s Representative (COR), Major

Ethan England, at (410) 918-6538 for execution of work. Emergency situations, military operations, or other contingencies, may cause suspension of work or restrictions on access to the construction site. If military emergency operations require escorts, the Government will provide them to the Contractor at no cost.

The Contractor shall designate employees; usually the job superintendent and one other person, to sign a background check release form for base access. Once a background check has been completed with no negative findings, those employees will be granted escort privileges. This employee shall be responsible for escorting all employees that do not have badges, including subcontractors and delivery persons.

The COR will determine the equipment, material and other staging locations or work areas available under this contract.

Contractor shall assume full responsibility for protection and security of materials and equipment stored on site.

Contractor shall move any stored products, under their control, which interfere with operations of the Government.

5. Government Equipment:

Contractor use of Government owned or leased equipment such as: hoists, forklifts, compressors, welding machines, cutting rigs, etc. shall not be permitted on either a reimbursable or non-reimbursable basis. Cost for all equipment required to accomplish the work shall be included in the Contractors final bid price.

6. Permits and Inspections:

Normally no permits or inspections by local building officials are required. All inspections will be performed by COR unless modified by the Statement of Work. Any testing is the responsibility of the contractor. All testing must get prior approval by the /Contracting

Officer.

Unless otherwise specified in other sections of this specification, the use of burning equipment or open flame welding and cutting shall be allowed only as authorized in writing by the local Fire Inspector (Facility 3150); telephone #: 410-918-6257. Once approved by the Fire Inspector, a written AF Form 592 - USAF Welding, Cutting, and Brazing Permit will be issued. The permit is will be issued by the fire department within one (1) hour of request, and must be renewed daily. In addition to this permit, a Risk Assessment for the hot work will be provided by Safety (Facility 4200); telephone #:410-918-6524

Digging permits are obtained from the Work Control Office (Facility 2100) at (410) 918-

6300. The Contractor is responsible for contacting Miss Utility to mark the gas and electrical lines. The Contractor is responsible for hiring a private underground utility marking company to mark the water, sanitary sewer, storm sewer, broadband cable, and communication lines.

7. Change Orders:

Only the Base Civil Engineer (BCE) or the Contractor may initiate change order requests.

Do not proceed with any work until a signed modification or other written authority is received from the Contracting Officer. Only the Contracting Officer may approve a change order.

8. Field Changes:

No changes in the cost or the scope of the project may be made without processing a change order. Field changes not involving cost or scope may be initiated by the BCE, COR, Contracting Officer or the Contractor.

9. Contractor Passes:

Contractor’s Passes and ID cards for all Contractor personnel are required for access to the

Base and construction site. All employees who will be driving on base must have a valid driver’s license, proof of vehicle insurance, vehicle registration and a vehicle pass. Vehicle

Passes and Base ID cards can be obtained from the Security Forces (Facility 2020).

10. Daily Reports and Sign-In Register:

Each day the Contractor is on site to perform any work, the Superintendent/Foreman shall sign in at Base Engineering (Facility 2100), indicating specific Facility/Location and the number of persons who shall be performing work that day. Upon Notice to Processed (NTP) contractor will provide at the end of every week separate daily reports to the Governments

Project Manager

11. Hours of Operations:

The hours of operations at the Martin State Airport Air National Guard Base are 10 hours per day (0630 – 1700) Tuesday – Friday. Coordinate access to premises with COR for execution of work. Emergency situations, military operations, or other contingencies, may cause suspension of work or restrictions on access to the construction site.

12. Off-Hours Work:

Except as otherwise specified, all work shall be performed during regular work hours

(indicated above). If the Contractor desires or is required to work on Mondays, Saturdays, Sundays, Holidays or other hours outside normal work schedule, the Contractor shall be required to seek written approval from the Contracting Officer. The Contractor is not entitled to premium time if the request is approved.

13. Clean up:

The work site is an active civilian and military airport. Site cleanliness and Foreign Object

Debris (FOD) control is essential. The Contractor will clean up all construction debris and refuse and will remove it from the work site and the Base daily at their own expense.

14. Safety:

The Contractor is responsible for performing all work In Accordance With (IAW) State and

Federal OSHA requirements as well as compliance with the most current USACE EM 385

1-1.

15. Environmental Protection and Waste Disposal:

The Contractor shall, at their own expense, remove all sludge, dusts and debris from the property of the Martin State Airport Air National Guard Base which have resulted from specific work described in (Statement of Work (SOW). The disposal of all such materials, which may include hazardous or toxic liquids that are used to perform the work, shall conform to all Federal, State, and Local environmental regulations with regards to both transportation and ultimate disposal. This project must comply with all Federal, State, and

Local environmental regulations. All dumpster service and waste management shall be provided at no additional cost to the Government. All recyclable metal shall be placed into

Maryland Air National Guard scrap metal recycling containers. Please contact the Base

Environmental Engineer Lt Col Peter Loebach at (410) 918-6486 for detailed information.

16. Hazardous Materials:

If suspected hazardous materials are discovered, do not disturb, and contact the COR.

Testing for asbestos containing materials performed prior to previous roofing projects revealed No Asbestos Containing Materials (ACM) to be present on this roof.

17. Drawings:

Drawings furnished by the government to the Contractor may be used for general information only and shall not be relied upon or used as the basis for preparation of contract drawings required by this contract without complete on-site verification by the Contractor.

18. Specific Project Information:

Codes: Roof Replacement - National Fire Protection Association (NFPA), International

Building Code (IBC), International Plumbing Code (IPC), and the national building code adopted by the local jurisdiction for wind, snow and seismic loads.

References: Roof Replacement - Factory Mutual (FM) Standard 4470 - Approval Standard for Class 1 Roof Covers, Underwriters Laboratories (UL) - Roofing Systems and Materials

Guide (TGFU R1306), American Society for Testing and Materials (ASTM) - Annual Book of ASTM Standards, Sheet Metal and Air Conditioning Contractors National Association, Inc. (SMACNA), National Roofing Contractors Association (NRCA), and the American

Society of Civil Engineers (ASCE) Standards.

Standards: Roof Replacement - ASCE 7 - Minimum Design Loads for Buildings and Other

Structures, UL 790 Class A for fire resistance, and UL 580 Class 90 for wind uplift resistance.

19. Site Visit:

TBD

20. Cost Proposal: Provide a detailed cost proposal indicating costs and breakdown for:

a. Labor

b. Demolition

c. Material

d. Installation

e. Dumpster

21. Description of Work:

The Contractor shall describe in his or her proposal how they will manage the project. The

Contractor shall identify key staff and their abilities to manage projects of this magnitude, including scheduling methods, reporting and execution.

22. Construction Performance Period:

The Contractor shall identify the proposed construction performance period. The proposed performance period will be included in the Cost Proposal/Final Bid

23. Meetings:

A Preconstruction Meeting will be required post award and prior to construction. Bi-

Weekly progress meetings will also be required.

24. Sundry Elements:

Any material, devices or services not specifically mentioned or indicated in this specification that are reasonably required for a complete, finished and first class operating installation, shall be provided by the Contractor at no additional cost to the owner. The work shall be installed in accordance with this Statement of Work (SOW) and best industry practices.

25. Roof Replacement Scope of Work:

Demolition:

Contractor is to remove and dispose of the existing EPDM roof membrane from the roofs of three (3) sections/elevations.

Contractor is to remove and dispose of the all existing metal coping, flashing and fascia metal from all three (3) roof sections/elevations.

Contractor is to remove and dispose of all tapered ridge foam isolation from all three (3) roof section/elevations.

Contractor is to demo all roof material down to the roof deck material (concrete slabs on lower section and steel decking on higher section).

Contractor is to demo all material around roof penetrations; i.e., rain lenders, hatches, mechanical equipment, etc.

Contractor is to do all corresponding work that is necessary to complete the scope described in the Statement of Work (SOW); i.e., tarping, select-demo, moving dumpster, etc.

Contractor is to remove and reinstall any components necessary to complete is statement of

Work (SOW) i.e. antennas, roof units, ladders, lights, gutters, down spout, etc.

Contractor is demolish old lightening protection system in accordance with standards set by

UL96A and NFPA 780

Civil:

With the exception of repairing and reseeding any grassy area where the contractor may operate during the course of this project, the government does not foresee any other civil site work for this project.

Architectural:

Section/elevation 1:

Contractor is to prepare all work, have a finished look and be fully accomplished in accordance with industrial standards.

Contractor is to include in their bid all material, equipment and tools needed to accomplish the work described in this Statement of Work (SOW)

Contractor is to un-install and re-install insulated metal panel to install termination bar and

EPDM membrane on section/elevation 1.

Contractor is to install new tapered layer of polyisocyanurate rigid foam insulation with an

R-value of at least R24 to the roof deck on section/elevation 1. Please refer to drawing for tapered gradual diminution to be able to obtain optimum drainage.

To the roof insulation install a layer of ½ inch gypsum cover board of Dens-Deck Prime™, SECUROCK™ or an approved equivalent material having material characteristics that meet or exceed the following characteristics: Fiberglass mat coated gypsum panels with a non-asphaltic coating; Less than 10% water absorption rate as per ASTM C-1177, a UL 790

Class A Classification, an FM Class 1 approval and a minimum compressive strength of 900

PSI.

Contractor is to install new crickets on the upslope side of all mechanical equipment mounted on the roof.

Contractor is to install .50” aluminum coping and drip edge along all parapet roof/wall interface, and along the edge of section/elevation 1.

Contractor is to furnish and install new, pre-manufactured flashings or hand cut curb flashing on all roof penetrations, as specified by the roof system manufacturer.

Contractor is install new taping and caulk to all seams and roof penetrations.

Contractor is to install a single-ply white (60 mil single-ply) fully adhered membrane roofing system that is fabricated of an EPDM compound. New EPDM is to be installed over entire roof and section/elevations.

Contractor is to ensure all deck sheets and parapets will be pulled tight and installed as wrinkle-free as possible. Care shall be taken to remove ponding areas and to ensure proper drainage on the roof deck.

Contractor is install new lightening protection system in accordance with standards set by

Section/elevation 2 and 3:

Contractor is to prepare all work, have a finished look and be fully accomplished in accordance with industrial standards

Contractor is to include in their bid all material, equipment and tools needed to accomplish the work described in this Statement of Work (SOW)

Contractor is to install new 2” layer of polyisocyanurate rigid foam insulation with an R-value of at least R8 to the roof deck on section/elevation 2 and 3.

To the roof insulation install a layer of ½ inch gypsum cover board of Dens-Deck Prime™, SECUROCK™ or an approved equivalent material having material characteristics that meet or exceed the following characteristics: Fiberglass mat coated gypsum panels with a non-asphaltic coating; Less than 10% water absorption rate as per ASTM C-1177, a UL 790

Class A Classification, an FM Class 1 approval and a minimum compressive strength of 900

PSI.

Contractor is to install a single-ply white, (60 mil single-ply) fully adhered membrane roofing system that is fabricated of an EPDM compound. New EPDM is to be installed over entire roof and section/elevations.

Contractor is install all new flashing on the roof edge of sections/elevations 2 and 3with new .050” thick aluminum flashing. Form sections true to shape, accurate in size, square and free from distortion or defects.

Contractor is to install new crickets on the upslope side of all mechanical equipment mounted on the roof.

Contractor is install new taping and caulk to all seams and roof penetrations.

Contractor is install new lightening protection system in accordance with standards set by

26. Quality Assurance: Once installation is complete, a manufacturer’s Quality Assurance

Specialist (QAS) shall inspect the visible details of the roofing system for acceptability and for issuance of the final warranty. Any deficiencies shall be corrected by the Contractor and made ready for re-inspection within five (5) working days. Warranty shall be promptly issued upon final acceptance by the QAS.

27. Warranty:

Provide a manufacturer's minimum 20- year full system weather tightness, workmanship the contractor shall provide a minimum of a twenty (20) year No Dollar Limit Warranty on the installed roof system and ancillary equipment associated with the roofing system. A two year construction warranty shall be provided by the contractor to the government against defects from installation workmanship for the roofing system and material warranty.

28. Cutting and Patching Proposal:

Submit a proposal describing procedures at least 7 days before the time cutting and patching will be performed, requesting approval to proceed.

Cut in-place construction to provide for installation of other components or performance of other construction, and subsequently patch as required to restore surfaces to their original condition.

Use materials identical to in-place materials. For exposed surfaces, use materials that visually match in-place adjacent surfaces to the fullest extent possible.

29. Quality Control:

The Contractor shall establish and maintain quality control to assure compliance with contract requirements and shall maintain records of his quality control for all construction operations required under this the statement of work (SOW). A copy of these records, as well as the records of corrective action taken, shall be furnished to the Government.

30. Existing Utility Interruptions:

Do not interrupt utilities serving facilities occupied by Owner or others unless permitted under the following conditions:

Notify the COR prior to arranging with Baltimore Gas and Electric (BG&E) to shut off and turn on electrical and/or natural gas utilities. Notify the COR not less than 7 days in advance of proposed utility interruptions. The Government will be responsible for all

BG&E connection fees.

Do not proceed with utility interruptions without the COR’s written permission.

31. Submittals:

a. Production schedule with hold points for inspections.

b. Safety Plan/AHA

c. MSDS

d. Product data sheets and color samples as required for:

Roofing Membrane

Cover Board

Insulation

Base Flashing

Curb Flashing

Sheet Metal to include gauge and factory colors available, i.e. coping, flash, drip edge, fascia metals

Tape

Adhesives and fasteners

Caulking

Lighting protection antennas

Wire

32. Shop Drawings:

Provide drawings required to show the systems involved and clearly show the extent, type and detailed requirements of the work for approval by the COR prior to construction.

Submit 4 sets of all drawings; 1 set for BCE, 1 set for Contracting, and 2 sets will be returned to the Contractor. Drawings shall include but not be limited to:

a. Schedules as required.

b. Typical sections.

c. Construction plans and details.

33. As-Built Drawings:

Provide redlined As-Built drawings of all new construction. Utility redlines shall show the locations of utility lines and connections with dimensions that are triangulated to building corners.

34. Product Information:

Provide all material submittals utilizing AF IMT 3000, Material Approval Submittal available at: http://www.usmilitarycontracting.com/uploads/Attach_6.pdf for approval by the COR prior to construction. Submit 4 sets of all AF IMT 3000 with attachments; 1 set for

BCE, 1 set for Contracting, and 2 sets will be returned to the Contractor. Provide the following product information, calculations, and material samples for approval by the COR prior to construction:

a. Production schedule with hold points for inspections.

b. Safety Plan/AHA

c. MSDS

d. Product data sheets and color samples as required for:

Roofing Membrane

Cover Board

Insulation

Base Flashing

Curb Flashing

Sheet Metal to include gauge and factory colors available, i.e. coping, flash, drip edge, fascia metals

Tape

Adhesives and fasteners

Caulking

Lighting protection antennas

Wire

35. Installer’s Qualification:

Provide documentation to indicate the Installer is a qualified firm and is approved, authorized, or licensed by the roofing system manufacturer to install the manufacturer’s product, and is eligible to receive the manufacturer’s warranty.

Contractor shall have at least ten years documented experience in demolishing and installing

EPDM or TPO roofing projects of 20,000 square feet or more.

Contractor or sub-contractor must have a certified Register Roof Observer (RRO) to oversee this entire project.

36. Certifications:

Contractor shall provide a copy of the certification to ensure Register Roof Observer (RRO) is certified by the Roof Consulting Institute (RCI) and that the certification is up- to- date.

The RRO shall have a minimum of three years’ experience as an RRO and must provide documentation of relevant experience in the installation monitoring, documentation, and inspection of roofing systems installations. Provide specific details regarding the installation monitoring and inspection of EPDM roofing systems within the RRO experience documentation. RRO must be fluent in English.

37. Prescriptions/Clauses:

38. Wage Determination:

Currently, General Decision Number MD150044 04/03/2015 MD44 is applicable to this task order. However, the current prevailing Wage Determination will be incorporated at time of award.

39. Performance and Payment Bonds:

In accordance with Contract Clause 52.228-15, Contractors are reminded that any award over $25,000 shall require Payment Bonds and awards exceeding $100,000 shall require both Payment and Performance Bonds. All bonds are due no later than 10 days after award.

40. Construction: (X) YES or ( ) NO, reference Contract Clause 52.246-21, Warranty of

Construction Clause is applicable to this task order.

41. Statement of Work Attachments:

a. Project Location Map

b. Pictures

c. Existing Roof Plans

d. Environmental Protection Plan for Contractors.